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The site was occupied between 1250 and 1550, and served as the focal point for interaction with other Mississippian culture areas along the coast and the interior of the Southeastern United States. It is located on Mound Island in the Mobile-Tensaw River Delta, north of present-day Mobile, and includes 18 platform mounds, the tallest being roughly 45 feet (14 m) high. Five of those eighteen mounds are arranged around the central plaza. It was the largest Mississippian chiefdom on the north-central Gulf Coast. It is difficult to reach by foot; however it would have been easily accessed by dugout canoes, the primary mode of transportation of the peoples in the region. It lies near the confluence of the Tombigbee and Alabama rivers. The streams become a maze of branches and bayous at the head of Mobile Bay. The site was a ceremonial center for the Pensacola people, as well as a social, political, religious, and trade center for the Mobile Delta region and the central Gulf Coast.[2]

The approach to Mound Island, site is on the left.

Bottle Creek site was first mapped in the 1880s, but its location in the middle of the delta, completely surrounded by swamp and hidden by immense cypress trees, made it inaccessible. This protected it from most of the plundering that occurred at similar sites in the Southeast. It was a ceremonial center for the Pensacola people and served as a gateway to their society despite its seemingly remote location. It was first professionally investigated in 1932 when David L. DeJarnette, of the Alabama Museum of Natural History, began his work there to determine if the site had a cultural relationship with Moundville, connected to the north by a river system.